CVE-2026-92388
Last modified
CVE-2026-92388 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. When an FTP wildcard `LIST` operation fails, libcurl omits the restoration path meant for successful listings, leaving the write callback set to the internal listing parser and the write callback data pointing directly to the easy handle. Subsequent reuse of this handle triggers an immediate crash, and cloning it via `curl_easy_duphandle()` copies this corrupted state into the duplicate. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
Description
When an FTP wildcard `LIST` operation fails, libcurl omits the restoration path meant for successful listings, leaving the write callback set to the internal listing parser and the write callback data pointing directly to the easy handle. Subsequent reuse of this handle triggers an immediate crash, and cloning it via `curl_easy_duphandle()` copies this corrupted state into the duplicate. If the original handle is subsequently freed, executing a transfer on the cloned handle causes a heap use-after-free read against the dangling handle reference; alternatively, reusing the original or cloned handle while changing only `CURLOPT_WRITEDATA` (and omitting `CURLOPT_WRITEFUNCTION`) results in type confusion, forcing the internal parser to interpret incoming server response bytes into memory at the application-supplied write data pointer.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| curl | curl | >= 8.22.0, <= 8.22.0; >= 8.21.0, <= 8.21.0; >= 8.20.0, <= 8.20.0; >= 8.19.0, <= 8.19.0; >= 8.18.0, <= 8.18.0; >= 8.17.0, <= 8.17.0; >= 8.16.0, <= 8.16.0; >= 8.15.0, <= 8.15.0; >= 8.14.1, <= 8.14.1; >= 8.14.0, <= 8.14.0; >= 8.13.0, <= 8.13.0; >= 8.12.1, <= 8.12.1; >= 8.12.0, <= 8.12.0; >= 8.11.1, <= 8.11.1; >= 8.11.0, <= 8.11.0; >= 8.10.1, <= 8.10.1; >= 8.10.0, <= 8.10.0; >= 8.9.1, <= 8.9.1; >= 8.9.0, <= 8.9.0; >= 8.8.0, <= 8.8.0; >= 8.7.1, <= 8.7.1; >= 8.7.0, <= 8.7.0; >= 8.6.0, <= 8.6.0; >= 8.5.0, <= 8.5.0; >= 8.4.0, <= 8.4.0; >= 8.3.0, <= 8.3.0; >= 8.2.1, <= 8.2.1; >= 8.2.0, <= 8.2.0; >= 8.1.2, <= 8.1.2; >= 8.1.1, <= 8.1.1; >= 8.1.0, <= 8.1.0; >= 8.0.1, <= 8.0.1; >= 8.0.0, <= 8.0.0; >= 7.88.1, <= 7.88.1; >= 7.88.0, <= 7.88.0; >= 7.87.0, <= 7.87.0; >= 7.86.0, <= 7.86.0; >= 7.85.0, <= 7.85.0; >= 7.84.0, <= 7.84.0; >= 7.83.1, <= 7.83.1; >= 7.83.0, <= 7.83.0; >= 7.82.0, <= 7.82.0; >= 7.81.0, <= 7.81.0; >= 7.80.0, <= 7.80.0; >= 7.79.1, <= 7.79.1; >= 7.79.0, <= 7.79.0; >= 7.78.0, <= 7.78.0; >= 7.77.0, <= 7.77.0; >= 7.76.1, <= 7.76.1; >= 7.76.0, <= 7.76.0; >= 7.75.0, <= 7.75.0; >= 7.74.0, <= 7.74.0; >= 7.73.0, <= 7.73.0; >= 7.72.0, <= 7.72.0; >= 7.71.1, <= 7.71.1; >= 7.71.0, <= 7.71.0; >= 7.70.0, <= 7.70.0; >= 7.69.1, <= 7.69.1; >= 7.69.0, <= 7.69.0; >= 7.68.0, <= 7.68.0; >= 7.67.0, <= 7.67.0; >= 7.66.0, <= 7.66.0; >= 7.65.3, <= 7.65.3; >= 7.65.2, <= 7.65.2; >= 7.65.1, <= 7.65.1; >= 7.65.0, <= 7.65.0; >= 7.64.1, <= 7.64.1; >= 7.64.0, <= 7.64.0; >= 7.63.0, <= 7.63.0; >= 7.62.0, <= 7.62.0; >= 7.61.1, <= 7.61.1; >= 7.61.0, <= 7.61.0; >= 7.60.0, <= 7.60.0; >= 7.59.0, <= 7.59.0; >= 7.58.0, <= 7.58.0; >= 7.57.0, <= 7.57.0; >= 7.56.1, <= 7.56.1; >= 7.56.0, <= 7.56.0; >= 7.55.1, <= 7.55.1; >= 7.55.0, <= 7.55.0; >= 7.54.1, <= 7.54.1; >= 7.54.0, <= 7.54.0; >= 7.53.1, <= 7.53.1; >= 7.53.0, <= 7.53.0; >= 7.52.1, <= 7.52.1; >= 7.52.0, <= 7.52.0; >= 7.51.0, <= 7.51.0; >= 7.50.3, <= 7.50.3; >= 7.50.2, <= 7.50.2; >= 7.50.1, <= 7.50.1; >= 7.50.0, <= 7.50.0; >= 7.49.1, <= 7.49.1; >= 7.49.0, <= 7.49.0; >= 7.48.0, <= 7.48.0; >= 7.47.1, <= 7.47.1; >= 7.47.0, <= 7.47.0; >= 7.46.0, <= 7.46.0; >= 7.45.0, <= 7.45.0; >= 7.44.0, <= 7.44.0; >= 7.43.0, <= 7.43.0; >= 7.42.1, <= 7.42.1; >= 7.42.0, <= 7.42.0; >= 7.41.0, <= 7.41.0; >= 7.40.0, <= 7.40.0; >= 7.39.0, <= 7.39.0; >= 7.38.0, <= 7.38.0; >= 7.37.1, <= 7.37.1; >= 7.37.0, <= 7.37.0; >= 7.36.0, <= 7.36.0; >= 7.35.0, <= 7.35.0; >= 7.34.0, <= 7.34.0; >= 7.33.0, <= 7.33.0; >= 7.32.0, <= 7.32.0; >= 7.31.0, <= 7.31.0; >= 7.30.0, <= 7.30.0; >= 7.29.0, <= 7.29.0; >= 7.28.1, <= 7.28.1; >= 7.28.0, <= 7.28.0; >= 7.27.0, <= 7.27.0; >= 7.26.0, <= 7.26.0; >= 7.25.0, <= 7.25.0; >= 7.24.0, <= 7.24.0; >= 7.23.1, <= 7.23.1; >= 7.23.0, <= 7.23.0; >= 7.22.0, <= 7.22.0; >= 7.21.7, <= 7.21.7; >= 7.21.6, <= 7.21.6; >= 7.21.5, <= 7.21.5; >= 7.21.4, <= 7.21.4; >= 7.21.3, <= 7.21.3; >= 7.21.2, <= 7.21.2; >= 7.21.1, <= 7.21.1; >= 7.21.0, <= 7.21.0 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
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